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View Full Version : Question about Canon 75-300mm f/4-5.6 IS USM


DNHayashida
11th of February 2004 (Wed), 13:09
I've tried to find this lens in the stores to look at it, but everyone is out of stock - My question about the Canon 75-300mm f/4-5.6 IS USM is does the front threads rotate when it focuses? I plan on using a polarizing filter since some of my shots will be over water.
Darryl Hayashida

Bruce Hamilton
11th of February 2004 (Wed), 14:52
Mine is the 75-300mm f/4-5.6 III instead of USM, but the threads do rotate, unfortunately... Even worse with creative filters, like the Cokin (http://www.cokin.com) system.

DNHayashida
11th of February 2004 (Wed), 15:00
Mine is the 75-300mm f/4-5.6 III instead of USM, but the threads do rotate, unfortunately... Even worse with creative filters, like the Cokin (http://www.cokin.com) system.

Thanks for the answer, that will be inconvenient, especially since I plan to take pictures of birds at the seashore. It would have been nice to have the filter stay oriented while it focused.

Hmmmm....
No other lens (except Sigma and it's a lot more) has IS. Bummer.
Darryl Hayashida

RichardtheSane
11th of February 2004 (Wed), 15:12
Maybe wait a little while untill the new EF 70-300 DO IS lens comes out, that should be all internal focusing so no rotating front element...

billhercus
12th of February 2004 (Thu), 05:27
.... or do what I did. Buy the Sigma 100-300f4 EX!! Superb.

tracyh
12th of February 2004 (Thu), 07:10
I used to have the 75-300 IS lens and used a circular polarizer filter on it all the time with no issues.

ron chappel
13th of February 2004 (Fri), 01:17
I think tracy means he (she?) had no problems quickly readjusting the polarizer. I guess it would depend on wether you were shooting action or not.The canon 100-300 is a very good option.It is noticably better in every way than the 75-300.I do recall thay are expensive new though(?).I bought mine 2nd hand

tracyh
13th of February 2004 (Fri), 08:25
Hi Ron,
Perhaps I should feel stupid... because I never noticed a need to re-adjust the polarizer after focusing. Maybe because I'm generally shooting landscape photos at the time, so I probably focus first, then adjust the polarizer. Just never thought much about it!
By the way... there's a Ron Chapel that taught (maybe still teaches?) an adult education photography class here in Davenport, IA... just wondering if you're the same guy?
Thanks, Holly